I hope it's not too late but I just recently started the game...
In order to make the right combination, you need to bring a cable from the other
"room" and connect it with one of the three cables in the
"boss' room" .
The trick is to bring the cable from the other
"room" into the
boss' room while being in front of your little space ship, not behind. You need to grab that cable beside the upper claw. Think about how to do this.
Now the rest is easy..
Connect the cable to the
upper-right cable , and quickly spin counterclockwise to grab the
upper-left and connect it to the
bottom cable . Done!
Good luck!!